1997 jetta trek
my check engine light is on the code is p0172 "system bank 1 running too rich" . i've already replaced the o2 sensor in front of the catalytic convertor. and the light is still on any suggestions?!? ne 1 have the same problem??
when you replaced it, did you reset the computer?
Search Volkswagen Jetta Questions
Volkswagen Jetta Experts